ACTUALLY useful, simple and bug free.

I am using the free version, and I find it indispensable to consolidate files and make my site lighter. This is like an x-ray of all the extra stuff plugins load (it’s unbelievable!). I don’t use 3rd party plugins since I’m a developer myself, unless they are utilities and well done. This is one of the few I use consistently, and don’t curse under my breath while doing so ;P.